Improve ‘CatalogSource’ Details view & add a new "Operators" tab

Improve ‘CatalogSource’ details view (on the “Details” tab)

• On ‘CatalogSource’ details view:
  • Show & Edit “Catalog Polling Interval” (if `spec.sourceType: grpc`)
    --> A dropdown with options in ‘15m’, ‘30m’, ‘45m’, ‘60m’.
  • (Sync up with the list view) Expose newly introduced fields on the ‘CatalogSource’ object:
    • Expose “Status” (status.connectionState.lastObservedState)
    • Display Name (spec.displayName)
    • Publisher (spec.publisher)
    • Availability
    • Endpoint (spec.image)
    • Polling Interval
    • # of Operators
  • Add an “Operators” tab - show a list of “PackageManifests” (Operators) consists of this ‘CatalogSource‘